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/**
* Copyright (C) 2020-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/db/commands.h"
#include "mongo/db/commands/migrate_tenant_cmds_gen.h"
#include "mongo/db/repl/migrate_tenant_state_machine_gen.h"
#include "mongo/db/repl/migrating_tenant_donor_util.h"
namespace mongo {
namespace {
template <typename RequestT>
class MigrationDonorCmdBase : public TypedCommand<MigrationDonorCmdBase<RequestT>> {
public:
using Request = RequestT;
using TC = TypedCommand<MigrationDonorCmdBase<RequestT>>;
class Invocation : public TC::InvocationBase {
public:
using TC::InvocationBase::InvocationBase;
using TC::InvocationBase::request;
void typedRun(OperationContext* opCtx) {}
private:
bool supportsWriteConcern() const override {
return false;
}
NamespaceString ns() const override {
return NamespaceString(request().getDbName(), "");
}
void doCheckAuthorization(OperationContext* opCtx) const override {}
};
bool adminOnly() const override {
return true;
}
std::string help() const override {
return "Multi-tenant migration command on the donor.";
}
BasicCommand::AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return BasicCommand::AllowedOnSecondary::kNever;
}
};
class DonorStartMigrationCmd : public MigrationDonorCmdBase<DonorStartMigration> {
public:
using ParentInvocation = MigrationDonorCmdBase<DonorStartMigration>::Invocation;
class Invocation final : public ParentInvocation {
public:
void typedRun(OperationContext* opCtx) {
const auto requestBody = request();
StringData dbPrefix = requestBody.getDatabasePrefix();
auto donorStartState = TenantMigrationDonorStateEnum::kDataSync;
const TenantMigrationDonorDocument donorDocument(
OID::gen(), dbPrefix.toString(), donorStartState);
migrating_tenant_donor_util::dataSync(opCtx, donorDocument);
}
private:
void doCheckAuthorization(OperationContext* opCtx) const override {}
};
std::string help() const override {
return "Start migrating databases whose names match the specified prefix to the specified "
"replica set.";
}
} donorStartMigrationCmd;
class DonorWaitForMigrationToCommitCmd
: public MigrationDonorCmdBase<DonorWaitForMigrationToCommit> {
public:
using ParentInvocation = MigrationDonorCmdBase<DonorWaitForMigrationToCommit>::Invocation;
class Invocation final : public ParentInvocation {
public:
void typedRun(OperationContext* opCtx) {}
};
std::string help() const override {
return "Wait for migration to be commited.";
}
} donorWaitForMigrationToCommit;
class DonorForgetMigrationCmd : public MigrationDonorCmdBase<DonorForgetMigration> {
public:
using ParentInvocation = MigrationDonorCmdBase<DonorWaitForMigrationToCommit>::Invocation;
class Invocation final : public ParentInvocation {
public:
void typedRun(OperationContext* opCtx) {}
};
std::string help() const override {
return "Forget a migration";
}
} donorForgetMigration;
} // namespace
} // namespace mongo
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